On Behavior -
"When referring to objective experience, I have repeatedly emphasized the fact that things, their movements and changes are given as outside or before us. At the same time I have maintained that objective experience depends upon processes in the brain." (Köhler, 1947, pg. 123)

"So far we have learned that, as a matter of principle, facts of inner life and perceptual facts may have certain traits in common. The main question which we have to answer is, however, much more specific: Can the behavior of a person, as perceived by others, resemble the mental processes of this person?" (Köhler, 1947, pg. 135)

On Association -
"If we were to give no attention to direct experience we should be in great danger of constructing an artificially simplified system of psychology such as that of Behaviorism. On the other hand, it seems impossible to develop psychology as a science of direct experience alone. For this purpose the field of experience is too restricted. Quite obviously, the neural events which are accompanied by experience are only parts of larger functional structures." (Köhler, 1947, pg. 147)

On Recall -
"Psychology investigates three main topics in the field of memory: (1) learning and the formation of the traces which later enable us to recall, (2) the fate of these traces in the time between learning and recall, and (3) the process of recall itself." (Köhler, 1947, pg. 165)

On Insight -
"If association, habit and recall are not the facts by which the course of mental life is principally determined, what other factors are more important? To this question there is an answer, which is seldom clearly formulated, but nevertheless implicitly accepted by most people. We will call it the layman's conviction. The layman believes that he often feels directly why he wants to do certain things in a first situation, and certain other things in a second. If he is right, the forces which principally determine his mental trends and his actions are for the most part directly given in his experience. Not all psychologists share this view. Many still believe that people do one thing or another, because on a first occasion certain nerve paths are particularly good conductors, and on a second, certain other paths. ... The layman's belief stems from everyday experience. The defenders of the other view seem to believe that their view alone is compatible with the spirit of science. (Köhler, 1947, pg. 188)

Three Problems in Learning -
"...the accomplishment of learning as a modification of behaviour can be analyzed on its process side into three different constituents: (1) the arousal of a specific (the "correct") process; (2) the trace of this process; (3) the effect of this trace on later processes." (Koffka, 1935, pg. 541)

Definition of Learning -
"Learning, as the modification of an accomplishment in a certain direction, consists in creating trace systems of a particular kind, in consolidating them, and in making them more and more available both in repeated and in new situations." (Koffka, 1935, pg. 544)

On Innate processes -
"As I have pointed out elsewhere (1932) it is wrong to speak of innate processes. What is innate is structure, structure which will carry processes only when special forces arouse them. Even the first processes, which occur when the organism has as yet no traces, cannot be called innate: they are the reactions of the traceless organism to a definite set of stimuli." (Koffka, 1935, pg. 548-549)

Definition of Gestalt -
"The word gestalt 'has the meaning of a concrete individual and characteristic entity, existing as something detached and having a shape or form as one of its attributes' (Köhler, 1929, p.192). A gestalt is therefore a product of organization, organization the process that leads to a gestalt. But as a definition this determination would not be enough unless one implied the nature of organization, as it was expressed in the law of pragnanz, unless on remembered that organization as a category is diametrically opposed to mere juxtaposition or random distribution." (Koffka, 1935, pg. 682-683)

"...to say that a process, or the product of a process, is a gestalt means that it cannot be explained by mere chaos, the mere blind combination of essentially unconnected causes; but that its essence is the reason of its existence..." (Koffka, 1935, pg. 683)